[E-voting] CEV submission -- draft

P at draigBrady.com P at draigBrady.com
Mon Mar 15 11:43:07 GMT 2004


Michael McMahon wrote:
> Michael McMahon wrote:
> 
>> Michael McMahon wrote:
>>
>>>
>>>>  Apparently 80% of all ballots are unique.  
>>>
>>>
>>>
>>>
>>> I doubt this is true.I checked the 2002 raw data
>>> from Dublin North and there were only 3214 unique votes
>>> out of a total of 43942 (which is 7.3%) with 12 candidates.
>>>
>>> Do this on any Unix system
>>>
>>> tail  +2 votes.txt  | sed -e 's/"[0-9]*";//' | sort | uniq -d | wc -l
>>
>>
>>
>>
>> oops! I got that wrong. You need to omit the -d from the uniq command
>>
>> The real result was 19299 out of 43942 (which is 43% )
>>
> 
> The figures for Dublin West and Meath were 34.5% and 39% respectively,
> but it would do no harm for someone else to check this.
> Shows how easy it is to make mistakes with a computer :(

Confirmed. I downloaded the data from:
http://www.dublincountyreturningofficer.com/Results_Download.html
http://www.meath.ie/election.html

The number of different ballot combinations was:

$ tail +2 Votes\ Dublin\ \ North.txt | cut -d';' -f2- | sort | uniq | 
wc -l
   19299

The number of uniq ballots was:

$ tail +2 Votes\ Dublin\ \ North.txt | cut -d';' -f2- | sort | uniq -u 
| wc -l
   16085

> 
> One other interesting stat about Dublin North.
> 
> The six most common votes were the six different permutations
> of an FF 1.2.3 with no other preferences expressed.
> These six different votes accounted for 3266 voters or 7% the total.

Yes. One can check this like:

$ tail +2 Votes\ Dublin\ \ North.txt | cut -d';' -f2- | sort | uniq -c 
| LANG=C sort -k1,1rn | head -20
     800 "";"";"";"3";"";"2";"";"";"";"";"";"1"
     680 "";"";"";"1";"";"2";"";"";"";"";"";"3"
     506 "";"";"";"3";"";"1";"";"";"";"";"";"2"
     486 "";"";"";"2";"";"3";"";"";"";"";"";"1"
     429 "";"";"";"2";"";"1";"";"";"";"";"";"3"
     367 "";"";"";"1";"";"3";"";"";"";"";"";"2"
     343 "";"";"";"";"";"";"";"";"";"1";"";""
     278 "";"1";"";"";"";"";"";"";"";"";"";""
     251 "";"";"";"";"";"";"";"";"1";"";"";""
     194 "";"3";"";"";"";"";"";"";"1";"2";"";""
     177 "";"";"";"1";"";"";"";"";"";"";"";""
     172 "";"1";"";"";"";"";"";"";"2";"3";"";""
     171 "";"";"";"";"";"";"";"";"";"";"";"1"
     168 "";"2";"";"";"";"";"";"";"1";"3";"";""
     163 "";"";"";"";"";"1";"";"";"";"";"";""
     159 "2";"";"";"";"";"";"1";"";"3";"4";"";""
     154 "";"1";"";"";"";"";"";"";"3";"2";"";""
     150 "";"";"";"";"";"";"";"";"1";"2";"";""
     148 "";"";"";"";"";"";"";"";"2";"1";"";""
     131 "";"";"";"3";"";"2";"";"";"";"4";"";"1"

Pádraig.




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